According to Ally, some 10 billion pennies are minted each year, but nearly half of them go out of circulation. The company wants to remind people that every cent is worth saving. Remember the guy who put $5K in his bank account after cashing in pennies he saved for 45 years?

The company notes that lost or thrown away pennies result in millions of lost dollars each year.

According to the company, the pennies are located in public places in: Los Angeles, San Diego, Denver, Austin, Chicago, Charlotte, Detroit, Miami, New York and Washington, D.C.